Winter at the Alpine Timberline. Why Does Embolism Occur in Norway Spruce But Not in Stone Pine?

Stefan Mayr; Franziska Schwienbacher; Helmut Bauer

doi:10.1104/pp.011452

journal article Feb 01, 2003

Winter at the Alpine Timberline. Why Does Embolism Occur in Norway Spruce But Not in Stone Pine?

Stefan Mayr

Franziska Schwienbacher Helmut Bauer

Plant Physiology Vol. 131 No. 2 pp. 780-792 · Oxford University Press (OUP)

View at Publisher Save 10.1104/pp.011452

Abstract

AbstractConifers growing at the alpine timberline are exposed to frost drought and freeze-thaw cycles during winter—stress factors known to induce embolism in tree xylem. The two dominant species of the European Central Alps timberline were studied: Norway spruce (Picea abies [L.] Karst) and stone pine (Pinus cembra), which usually reaches higher altitudes. We hypothesized to find embolism only at the timberline and to observe less embolism in stone pine than in Norway spruce due to avoidance mechanisms. Seasonal courses of embolism and water potential were studied at 1,700 and 2,100 m during two winter seasons and correlated to vulnerability (to drought-induced embolism), leaf conductance, and micrometeorological data. Embolism was observed only at the timberline and only in Norway spruce (up to 49.2% loss of conductivity). Conductivity losses corresponded to low water potentials (down to −3.5 MPa) but also to the number of freeze-thaw events indicating both stress factors to contribute to embolism induction. Decreasing embolism rates—probably due to refilling—were observed already in winter. Stone pine did not exhibit an adapted vulnerability (50% loss of conductivity at −3.5 MPa) but avoided critical potentials (minimum −2.3 MPa): Cuticulare conductance was 3.5-fold lower than in Norway spruce, and angles between needles and axes were found to decrease in dehydrating branches. The extent of conductivity losses in Norway spruce and the spectrum of avoidance and recovery mechanisms in both species indicates winter embolism to be relevant for tree line formation.

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References

42

[1]

Anfodillo "Minimum cuticular conductance and cuticle features of Picea abies and Pinus cembra needles along an altitudinal gradient in the Dolomites (NE Italian Alps)." Tree Physiol (2002) 10.1093/treephys/22.7.479

[2]

Baig "Studies on upper timberline: morphology and anatomy of Norway spruce (Picea abies) and stone pine (Pinus cembra) needles from various habitat conditions." Can J Bot (1976) 10.1139/b76-174

[3]

Baig "The effects of wind and temperature on cuticular transpiration of Picea abies and Pinus cembra and their significance in dessication damage at the alpine timberline." Oecologia (1980) 10.1007/bf00346828

[4]

Baig "Cuticuläre Transpiration von Picea abies und Pinus cembra- Zweigen auf verschiedener Seehöhe und ihre Bedeutung für die winterliche Austrocknung der Bäume an der alpinen Waldgrenze." Centralbl Gesamte Forstw (1974)

[5]

Boehm "Capillarität und Saftsteigen." Ber Dtsch Bot Ges (1893)

[6]

Brodribb "The importance of xylem constraints in the distribution of conifer species." New Phytol (1999) 10.1046/j.1469-8137.1999.00446.x

[7]

Chiu "The effect of segment length on conductance measurements in Lonicera fragrantissima." J Exp Bot (1993) 10.1093/jxb/44.1.175

[8]

Cochard "Vulnerability of several conifers to air embolism." Tree Physiol (1992) 10.1093/treephys/11.1.73

[9]

Davis "The relationship between xylem conduit diameter and cavitation caused by freezing." Am J Bot (1999) 10.2307/2656919

[10]

Dixon "On the ascent of sap." Proc R Soc Lond (1894)

[11]

Gross "Über die Frostresistenz der Fichte mit besonderer Berücksichtigung der Zahl der Gefrierzyklen und der Geschwindigkeit der Temperaturänderung beim Frieren und Auftauen." Forstwiss Centralbl (1991) 10.1007/bf02741255

[12]

Hacke "Xylem dysfunction during winter and recovery of hydraulic conductivity in diffuse-porous and ring-porous trees." Oecologia (1996) 10.1007/bf00330005

[13]

Jackson "Cavitation and water transport in trees." Endeavour (1994) 10.1016/0160-9327(94)90062-0

[14]

Jackson "Xylem cavitation in Scots pine and Sitka spruce saplings during water stress." Tree Physiol (1995) 10.1093/treephys/15.12.783

[15]

Katz "Uptake of water and solutes through twigs of Picea abies (L.) Karst." Trees (1989) 10.1007/bf00202398

[16]

Körner "Leaf diffuse conductances in the major vegetation types of the globe." (1994)

[17]

Larcher "Der Wasserhaushalt immergrüner Pflanzen im Winter." Ber Dtsch Bot Ges (1972) 10.1111/j.1438-8677.1972.tb04132.x

[18]

Lipp "The impact of subcanopy light environment on the hydraulic vulnerability of Rhododendron maximum to freeze-thaw cycles and drought." Plant Cell Environ (1997) 10.1046/j.1365-3040.1997.d01-22.x

[19]

Lo Gullo "Different vulnerabilities of Quercus ilex L. to freeze- and summer drought-induced xylem embolism: an ecological interpretation." Plant Cell Environ (1993) 10.1111/j.1365-3040.1993.tb00898.x

[20]

Magnani "Interpretation of seasonal changes of xylem embolism and plant hydraulic resistance in Fagus sylvatica." Plant Cell Environ (1995) 10.1111/j.1365-3040.1995.tb00570.x

[21]

Mattes "Die Lebensgemeinschaft von Tannenhäher und Arve." Eidg Anst Forstl Versuchswes Ber (1982)

[22]

Mayr "Winter-drought induced embolism in Norway spruce (Picea abies) at the Alpine timberline." Physiol Plant (2002) 10.1034/j.1399-3054.2002.1150108.x

[23]

Michaelis "Ökologische Studien an der alpinen Baumgrenze: V. Osmotischer Wert und Wassergehalt während des Winters in verschiedenen Höhenlagen." Jahrb Wiss Bot (1934)

[24]

Pammenter "A mathematical and statistical analysis of the curves illustrating vulnerability of xylem to cavitation." Tree Physiol (1998) 10.1093/treephys/18.8-9.589

[25]

Pisek "Zusammenhang zwischen Austrocknungsresistenz und Frosthärte bei Immergrünen." Protoplasma (1954) 10.1007/bf01248211

[26]

Richter "Wie entstehen Saugspannungsgradienten in Bäumen?" Ber Dtsch Bot Ges (1972) 10.1111/j.1438-8677.1972.tb04134.x

[27]

Robson "Freezing in conifer xylem: II. Pit aspiration and bubble formation." J Exp Bot (1988) 10.1093/jxb/39.11.1617

[28]

Robson "Freezing in conifer xylem: I. Pressure changes and growth velocity of ice." J Exp Bot (1987) 10.1093/jxb/38.11.1901

[29]

Sparks "Water content, hydraulic conductivity, and ice formation in winter stems of Pinus contorta: a TDR case study." Oecologia (2001) 10.1007/s004420000587

[30]

Sperry "A method for measuring hydraulic conductivity and embolism in xylem." Plant Cell Environ (1988) 10.1111/j.1365-3040.1988.tb01774.x

[31]

Xylem Embolism in Ring‐Porous, Diffuse‐Porous, and Coniferous Trees of Northern Utah and Interior Alaska

JOHN S. SPERRY, Kirk L. Nichols, June E. M. Sullivan et al.

Ecology 1994 10.2307/1939633

[32]

Sperry "Xylem cavitation and freezing in conifers." (2001) 10.1007/978-94-015-9650-3_5

[33]

Sperry "Xylem embolism in response to freeze-thaw cycles and water stress in ring-porous, diffuse-porous and conifer species." Plant Physiol (1992) 10.1104/pp.100.2.605

[34]

Sperry "Water-stress-induced xylem embolism in three species of conifers." Plant Cell Environ (1990) 10.1111/j.1365-3040.1990.tb01319.x

[35]

Sucoff "Freezing of conifer xylem and the cohesion-tension theory." Physiol Plant (1969) 10.1111/j.1399-3054.1969.tb07394.x

[36]

Tranquillini "Der Einfluβ von Seehöhe und Länge der Vegetationszeit auf das cuticuläre Transpirationsvermögen von Fichtensämlingen im Winter." Ber Dtsch Bot Ges (1974) 10.1111/j.1438-8677.1974.tb03166.x

[37]

Tranquillini "Winter desiccation as the cause for alpine timberline." N Z For Serv For Res Inst Tech Pap (1980)

[38]

Tyree "Biophysical perspectives of xylem evolution: Is there a tradeoff of hydraulic efficiency for vulnerability to dysfunction?" IAWA J (1994) 10.1163/22941932-90001369

[39]

Utsumi "Visualization of cavitated vessels in winter and refilled vessels in spring in diffuse-porous trees by cryo-scanning electron microscopy." Plant Physiol (1998) 10.1104/pp.117.4.1463

[40]

Vogt "Hydraulic vulnerability, vessel refilling, and seasonal courses of stem water potential of Sorbus aucuparia L. and Sambucus nigra L." J Exp Bot (2001) 10.1093/jexbot/52.360.1527

[41]

Wieser "Seasonal variation of leaf conductance in a subalpine Pinus cembra during the winter months." Phyton (2000)

[42]

Zimmermann (1983) 10.1007/978-3-662-22627-8

Metrics

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Citations

42

References

Details

Published: Feb 01, 2003
Vol/Issue: 131(2)
Pages: 780-792
License: View

Authors

S

Stefan Mayr

Institut für Botanik, Universität Innsbruck, Sternwartestrasse 15, A–6020 Innsbruck, Austria

F

Franziska Schwienbacher

Institut für Botanik, Universität Innsbruck, Sternwartestrasse 15, A–6020 Innsbruck, Austria

H

Helmut Bauer

Institut für Botanik, Universität Innsbruck, Sternwartestrasse 15, A–6020 Innsbruck, Austria

Cite This Article

Stefan Mayr, Franziska Schwienbacher, Helmut Bauer (2003). Winter at the Alpine Timberline. Why Does Embolism Occur in Norway Spruce But Not in Stone Pine?. Plant Physiology, 131(2), 780-792. https://doi.org/10.1104/pp.011452

Winter at the Alpine Timberline. Why Does Embolism Occur in Norway Spruce But Not in Stone Pine?

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